Maegaeet haet



(No Model.)

M. HART.

SYRINGE.

N0. 322,598. Patented July 21, 1885.

N. PETERS. PhakrLilhugnbhur, Wishlngkm, D C.

Nrrnn; STATES PATENT OFFICE.

MARGARET HART, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO CHARLES T.MOORE, OF SAME PLACE.

SYRlNGE SPECIFICATION forming part of Letters Patent No. 322,598, datedJuly 21, 1885.

' Application filed May 1, rest. (No model.)

To all whom it may concern.-

Be it known that I, IVIARGARET HART, of the city and county of New York,in the State of New York, have invented a new and useful Improvement inSyringes and Injecting Apparatus, of which the following is aspecification.

My invention relates to syringes and injecting apparatus in which theliquid contents of a bottle or receptacle may be forcibly expelledthrough a discharge-tube by compressing an elastic india rubber bulb orair chamber, whereby air will be compressed within the bottle orreceptacle to expel the liquid, and particularly to syringes orinjecting apparatus for the rectal injection of medicines, andnourishment for uterine purposes, and for the syringing of wounds.

In syringes or apparatus of the kind described it is very desirable toemploy with the discharge-tube small flexible nozzle or tip sectionswhich may be bent to give them the proper curve, and will not iuj ureany part of the body with which they come in contact; and the object ofmy invent-ion is to provide a simple and effective coupling forattaching such tipsections or nozzlesections to the discharge-tube, sothat they may be readily renewed when worn out, and attached anddetached without abrasion or injury to them.

The invention consists in a novel combina tion of parts hereinafterdescribed, and pointed out in the claim.

In the accompanying drawings," Figure 1 represents a partly sectionalelevation of an apparatus embodying my invention. Fig. 2 is a sectionalview, upon a larger scale, of the coupling which is employed to connectthe flexible delivery nozzle or tube with the main discharge-tube,including, also, a sectional view of the flexible curved delivery nozzleor tube; and Fig. 3 is a sectional view of the several parts of thecoupling detached from each other, and upon the same scale as Fig.- 2.

Similarletters of reference designate corresponding parts in the severalfigures.

A designates a bottle or receptacle forliquid, and B designates astopper-body which has upon it a bushing or packing, B, which will fittightly in the neck or mouth a of the bottle or receptacle A.

chamber 0 may have a nut, a, by which it is secured to the nipple bapacking-washer, 0*,

beinginterposed, thereby forming an air-tight joint. Into the stopper Bis inserted a downwardly-projecting tube, 01, which communicates withthe passage b, and said passage at its upper eud'is prolonged through alaterallyprojecting nipple or stem, 1)", with which a flexible dischargepipe or tube,D, is connected.

The bottle or receptacle A has marked or delineated upon its exterior ascale, a, indicating different quantities of liquid by the height towhich they fill the bottle. The outer end of the discharge-pipe D isprovided with a coupling, D, whereby a flexible discharge tube ornozzle, D may be connected with the discharge-pipe. In some cases it maybe desirable to provide the discharge tube or nozzle D with a sprinkleror rose-head, D through which liquid may be discharged in the form ofspray for fumigating a sick-room. Such a sprinkler is shown in Fig. 1.

The coupling D, which is best represented in Figs. 2 and 3, consists ofa body-piece, e, and sleeve f, having ascrew-threaded connection withsaid body -piece.e, and a central core or spreader, g, which is clampedbetween the body-piece e and the sleeve f when they are securedtogether. The central core or spreader, g, has a slightly conicalexterior and a convex or rounded rear end, which fits n against acorresponding concave seat, 0, in the end of the body-piece e. Thesleeve f has a conical bore or interior, f, the taper of whichcorresponds to the conical exterior of the central core or spreader g.

The discharge nozzle or tube D may consist of a tubular woven fabriccoated with an india-rubber compound,whioh serves to stiffen it andmaintain it in shape, and at the same time render it sufficientlyflexible so that it may be bent or curved to any desired form, and willthen retain the shape which is given to it.

The tubing for the nozzles D may be made in pieces of any length, andcut off to alength 5 the end of the flexible tube D is inserted throughthe sleeve f,- the conical spreader g is then introduced into its end,and the sleeve f is then screwed upon the body-piece e. By screwing upthe sleeve f to the position shown x in Fig. 2 the conical spreader willcome to a ght bearing in the conical seat 6, provided for it in the endof the body 6, and will be forced into the flexible tube D therebyspreading the end of the same into conical form and I 5 clamping ittightly into the bore of the sleeve When it is desired to attach a newnozzle, D, all that is necessary is to unscrew the sleeve f from thebody 6 and take out the conical spreader g. A new tube, D may then bein- 2o serted and secured in place in the coupling,

as above described.

It will be observed that the discharge nozzles or tubes D will beinexpensive, as they consist simply of a piece of flexible tubing, andmay easily be renewed by the person using the apparatus at a very smallcost.

The bottle or receptacle A may be filled either by removing the stopperB and introducing the liquid thereinto, or it may be filled 0 bycompressing the bulb O, and then introducing the nozzletube D into theliquid; then releasing the bulb O and allowing it to expand, therarefication of air in the bottle being sufficient to cause the liquidto flow through 3 5 the tube D into the bottle.

I am aware that a rubber tube has been secured to a fixed nipple bystretching it over the end portion of the nipple, and then screwing uponthe nipple a gland or collar which fits outside-of and clamps upon therubber tube.

By employing a conical spreader for entering the rubber or otherflexible tube, and which is separate from the nipple on which the glandis screwed, I leave the conical spreader and tube both free to turn withthe gland or sleeve when the latter is screwed into place, and hencethere is no abrasion of the tube by turning or rotating it upon thepart' which enters it, or by turning or rotating the sleeve or glandupon the tube.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination, with the discharge-pipe of an injecting-apparatus and aflexible nozzle-section to be connected therewith, of a couplingconsisting of a body-piece and sleeve connected by a screw-thread, thesleeve having a conical interior, and a central conical spreader or corewhich is inserted in the end of the flexible nozzle-section, and whichby screwing the sleeve upon the body is brought to a bearing upon thesaid body, substantially as and for the purpose herein described.

MARGARET HART.

Witnesses:

CHAS. T. MOORE, O. HALL.

